Home / 1,383,275.15-1,908,916-771,428.61

Finding the Fourth Proportional to 1,383,275.15, 1,908,916 and 771,428.61

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Solution

The fourth proportional to 1,383,275.15, 1,908,916 and 771,428.61 is: 1,064,569.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,275.15 : 1,908,916 = 771,428.61 : x
  2. Step 2: Convert to fraction form
    1,383,275.15/1,908,916 = 771,428.61/x
  3. Step 3: Cross multiply
    1,383,275.15x = 1,908,916 × 771,428.61
  4. Step 4: Simplify right side
    1,383,275.15x = 1,472,592,416,486.76
  5. Step 5: Solve for x
    x = 1,472,592,416,486.76/1,383,275.15
  6. Step 6: Final answer
    x = 1,064,569.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.